2026-06-02
Jiangsu Junlong Machinery has been deeply engaged in the field of precision metal bellows for more than 20 years. With 18 mu of self-owned factory facilities and a closely partnered R&D center, the company integrates independent research, engineering design and manufacturing, ensuring full control over key production processes. Focusing on demanding valve operating conditions, Junlong relies on three proprietary technologies: micro-diameter precision welding, multi-layer displacement coordination and service-condition-based life enhancement design. The company has developed nearly 10,000 product specifications across four major series, including valve bellows, sealing bellows and welded bellows.
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Covering multiple types of metal bellows and industry-specific components to meet different requirements for pressure, temperature, media and structural design.
Designed for high-precision, high-sealing and high-sensitivity operating conditions.
Suitable for pressure compensation, sealing isolation and industrial connection applications.
Junlong metal bellows are widely used in valves, petrochemical, instrumentation, aerospace, power generation, new energy and other fields, providing sealing isolation, displacement compensation, vibration absorption and pressure conversion solutions for different operating conditions.
Applied in globe valves, safety valves, control valves, regulating valves and other equipment, providing sealing isolation, displacement compensation and leakage prevention support.
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Suitable for high-temperature, high-pressure and corrosive media environments, meeting the needs of pipeline compensation, equipment connection and valve sealing.
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Designed for high-reliability application scenarios, providing structurally stable and performance-reliable metal bellows product support.
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Suitable for pharmaceutical equipment and fluid control systems, meeting requirements for cleanliness, corrosion resistance and stable sealing performance.
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Serving precision equipment applications that require high cleanliness, high sealing performance and high stability, supporting semiconductor manufacturing-related operating conditions.
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Applied in solar energy, polysilicon and new energy equipment scenarios, providing sealing, compensation, connection and vibration reduction support.
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Designed for high-safety and high-stability application environments, providing reliable metal bellows assembly solutions for critical equipment.
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Junlong is equipped with high-precision CNC machines, machining centers, professional laboratories and inspection equipment. Through standardized manufacturing processes and a strict quality management system, we ensure stable and reliable product delivery.
High-precision CNC machines, machining centers and professional production equipment ensure machining accuracy and batch production stability.
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Using engineering software such as AUTOCAD and Solidworks, we support 3D modeling, structural optimization and customized solution development.
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With a professional laboratory, we conduct material and performance testing in accordance with ISO, API, BS, GB and other applicable standards.
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We strictly inspect product dimensions, sealing performance, pressure resistance and finished product quality to ensure reliable delivery.
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